Hi Clement,

On 14 May 2012 17:32,  <[email protected]> wrote:
> After I increased sample density, the aliasing issue seems decrease.  If I 
> increased too much sample density, the image movement become very difficult.  
> Also the surface will become very dark.  Anyway to make the surface more 
> brighter.  This is the problem I mentioned before and you suggested me to use 
> TransferFunction to control light intensity. Is that right?

I don't have the data so can't say why it's getting dark, could it be
simply that the boundary is dark and being sampled better by higher
density.  As for aliasing issues, this something you always have to
contend with when sampling textures.

As for transfer functions controlling light intensity - they just
control how the intensity from the 3D texture map to colours, the
colours can change the brightness but can also reduce it, it's
something completely under your control.

Robert.
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